| RRC ID |
84914
|
| 著者 |
Zachs T, Malit JJL, Xu J, Schürch A, Sivabalasarma S, Nußbaum P, Albers SV, Pilhofer M.
|
| タイトル |
Archaeal type six secretion system mediates contact-dependent antagonism.
|
| ジャーナル |
Sci Adv
|
| Abstract |
Microbial communities are shaped by cell-cell interactions. Although archaea are often found in associations with other microorganisms, the mechanisms structuring these communities are poorly understood. Here, we report on the structure and function of haloarchaeal contractile injection systems (CISs). Using a combination of functional assays and time-lapse imaging, we show that Halogeometricum borinquense exhibits antagonism toward Haloferax volcanii by inducing cell lysis and inhibiting proliferation. This antagonism is contact-dependent and requires a functional CIS, which is encoded by a gene cluster that is associated with toxin-immunity pairs. Cryo-focused ion beam milling and imaging by cryo-electron tomography revealed that these CISs are bound to the cytoplasmic membrane, resembling the bacterial type six secretion systems (T6SSs). We show that related T6SS gene clusters are conserved and expressed in other haloarchaeal strains, which exhibit antagonistic behavior. Our data provide a mechanistic framework for understanding how archaea may shape microbial communities and affect the food webs they inhabit.
|
| 巻・号 |
10(46)
|
| ページ |
eadp7088
|
| 公開日 |
2024-11-15
|
| DOI |
10.1126/sciadv.adp7088
|
| PMID |
39546591
|
| PMC |
PMC11566945
|
| MeSH |
Archaea / genetics
Archaea / metabolism
Archaeal Proteins / genetics
Archaeal Proteins / metabolism
Haloferax volcanii / genetics
Haloferax volcanii / metabolism
Microbial Interactions
Multigene Family
Type VI Secretion Systems* / genetics
Type VI Secretion Systems* / metabolism
|
| リソース情報 |
| 一般微生物 |
JCM16054
JCM15770
JCM14848 |
